JP2000227668A5

JP2000227668A5 -

Info

Publication number: JP2000227668A5
Application number: JP1999027727A
Authority: JP
Filing date: 1999-02-04
Publication date: 2004-12-16

Description

【０００９】
【課題を解決するための手段】
本発明に従って、導電性支持体上に感光層を有する電子写真感光体において、感光層が、少なくとも下記一般式（１）で示される構成単位を有するポリアリレート樹脂を含有する電子写真感光体、この電子写真感光体を有するプロセスカートリッジ及び電子写真装置が提供される。[0009]
[Means for Solving the Problems]
In accordance with the present invention, an electrophotographic photosensitive member having a photosensitive layer on an electroconductive substrate, a photosensitive layer, an electrophotographic photoreceptor containing a polyarylate resins having a structural unit represented by at least the following general formula (1), There is provided a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member.

【００１０】
【化７】

[0010]
[Chemical formula 7]

【００２６】
【化８】

[0026]
[Image 8]

【００２７】
式中、Ｒ^２１〜Ｒ^２４は水素原子、炭素数１〜５のアルキル基、アリール基、炭素数１〜５のアルコキシ基、ハロゲン原子を示す。また、Ｘ^３は単結合、若しくは−ＣＲ^２５Ｒ^２６−を示す。Ｒ^２５及びＲ^２６は水素原子、ハロゲン原子、アルキル基、アリール基又はＲ^２５及びＲ^２６が結合することによって形成させるアルキリデン基を示す。[0027]
^Wherein, R 21 ^{to R 24} represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an aryl group, an alkoxy group having 1 to 5 carbon atoms, a halogen atom. Further, ^{X 3} is a single bond, or ^-CR 25 ^{R 26} - shows the. R ²⁵ and R ^{26 each} represent a hydrogen atom, a halogen atom, an alkyl group, an aryl group or an alkylidene group formed by combining R ²⁵ and R ²⁶ .

【００５７】
【化９】

[0057]
Embedded image

【００５９】
【化１０】

下記構造式のアミン化合物１部[0059]
[Image 10]

1 part of amine compound of the following structural formula

【００６０】
【化１１】

バインダー樹脂として構成単位例（１−２）で示される化合物（Ｍｗ＝７５０００）１０部をモノクロロベンゼン５０部／ジクロロメタン５０部の混合溶剤に溶解し、電荷輸送層用の塗布液を得た。塗布液を浸漬塗布法で塗布し、１２０℃にて１時間乾燥し、膜厚２７μｍの電荷輸送層を形成した。[0060]
[Image 11]

10 parts of a compound (Mw = 75000) represented by the structural unit example (1-2) as a binder resin was dissolved in a mixed solvent of 50 parts of monochlorobenzene and 50 parts of dichloromethane to obtain a coating liquid for charge transport layer. The coating solution was applied by a dip coating method and dried at 120 ° C. for 1 hour to form a charge transport layer having a thickness of 27 μm.

【００７２】
【化１２】

[0072]
[Chemical formula 12]

Claims

On a conductive support an electrophotographic photosensitive member having a photosensitive layer, the photosensitive layer, the electrophotographic photosensitive characterized by containing polyarylate resins having a structural unit represented by at least the following general formula (1) Body :

(In the above formula (1) , R ^{1 to} R ^{4 each} represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or an aryl group, provided that at least ^one of R ¹ and R ² and at least R ³ and R ⁴ One of is other than hydrogen atom) .

The electrophotographic photosensitive member according to claim 1, wherein the photosensitive layer contains a polyarylate copolymer having at least a constitutional unit represented by the following general formula (2) :

(In the above formula (2) , R ^{5 to} R ^{8 each} represent a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or an aryl group, provided that at least one of R ⁵ and R ⁶ and at least R ⁷ and R ⁸ R ^{9 to} R ^{12 each} represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an aryl group, an alkoxy group having 1 to 5 carbon atoms , or a halogen atom , and X ¹ represents ^one of them. single bond, -CR ¹³ R ¹⁴ - shows the shown .R ¹³ and R ¹⁴ are a hydrogen atom, a halogen atom, an alkyl group, an alkylidene group which formed by an aryl group, or R ¹³ and R ¹⁴ are bonded).

The electrophotographic photosensitive member according to claim 1 or 2, wherein the photosensitive layer contains at least a polyarylate copolymer represented by the following general formula (3) :

.

The photosensitive layer contains a polyarylate copolymer resin having, as a constitutional unit, a copolymer of at least a constitutional unit represented by the general formula (1) and a constitutional unit represented by the following general formula (5) An electrophotographic photosensitive member according to claim 1:
[ Formula 4 ]

(In the above formula (5), R ^{21 to} R ^{24 each} represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an aryl group, an alkoxy group having 1 to 5 carbon atoms, a halogen atom, and X ³ represents a single bond, or ^-CR 25 ^{R 26} - shows the ^{shows R 25} and ^{R 26} are a hydrogen atom, a halogen atom, an alkyl group, an alkylidene group which formed by an aryl group, or ^{R 25} and ^{R 26} are bonded).

The constitutional unit represented by the general formula (1) is a constitutional unit represented by the following formula (1-4), and the constitutional unit represented by the general formula (5) is represented by the following formula (5-2) The electrophotographic photosensitive member according to claim 4, which is a constituent unit:
[ Formula 5 ]

.

Said photosensitive layer further following general formula (4) containing polycarbonate resins having a structural unit represented by the claims 1 to electrophotographic photosensitive member according to any one of 5:
[Formula 6 ]

(Shown in the formula (4), R ¹⁵ ~R ¹⁸ is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an aryl group, an alkoxy group having 1 to 5 carbon atoms, a halogen atom. In addition, X ² is a single bond , -CR ¹⁹ R ²⁰ - .R ¹⁹ and R ²⁰ show a represents an alkylidene group which formed by a hydrogen atom, a halogen atom, an alkyl group, an aryl group, or R ¹⁹ and R ²⁰ are bonded).

The electrophotographic photosensitive member according to any one of claims 1 to 6 , which is used in a process of applying a DC voltage from a charging member disposed in contact with the electrophotographic photosensitive member to charge the photosensitive member.

An electrophotographic photosensitive member according to any one of claims 1 to 6 , charging means for charging the electrophotographic photosensitive member, developing means for developing an electrophotographic photosensitive member on which an electrostatic latent image is formed with toner, and transfer A process cartridge characterized by integrally supporting at least one means selected from the group consisting of a cleaning means for collecting residual toner on the photosensitive member after the process, and removable from the electrophotographic apparatus main body. .

An electrophotographic photosensitive member according to any one of claims 1 to 6 , a charging unit for charging the electrophotographic photosensitive member, an exposure unit for exposing the charged electrophotographic photosensitive member to form an electrostatic latent image, and electrostatics electrophotographic apparatus, characterized in that it comprises a developing means for developing an electrophotographic photosensitive member which is formed of the latent image with toner, and transfer means for transcription of the toner image on the transfer material.